Frink reportedly signed into Dartmouth-Hitchcock Medical Center's intensive care unit Tuesday just after 1 p.m. Less than a half hour later, Lebanon police received reports of shots being fired in the hospital.

"The facts gathered to this point reveal that the purpose of Mr. Frink's visit to the hospital today was to kill his mother," MacDonald told reporters, adding that the crime scene was still be investigated and that more than one shot had been fired. "No other patients, visitors or staff were physical injured as a result of the incident today."

At this point, police have not released a possible motive for the shooting.

Updated September 12, 2017 04:29 PM EDT

One person was taken into custody following reports of an active shooter at Dartmouth-Hitchcock Medical Center in new Hampshire.

The hospital was placed on lockdown and it remains unclear whether it has been lifted.

September 12, 2017 03:16 PM EDT

A new Hampshire hospital was placed on lockdown Tuesday following reports of an active shooter, according to the New York Daily News.

We have just received information that indicates there is an active shooter at the @DartmouthHitch Medical Center in Lebanon, NH. (Thread)

It is unclear whether a shooting actually occurred at Dartmouth-Hitchcock Medical Center's main campus in Lebanon, but WMUR reports that the hospital was evacuated.

"We are assessing the situation now, and will have more information as soon as it becomes available," the state's second largest medical center tweeted.

Police have asked people to avoid the area as they continue sweeping the campus.

City officials told the Boston Globe that an official advisory said someone "believed to be involved in the incident" was taken into custody just before 3 p.m. So far, no suspects have been identified.